OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
1 W. Y% v( ~6 \0 F. \5 E
/*
: A% R1 K* ~2 b1 a( a6 r: r
* edma_test.c
1 m' r0 f+ l) x V, [6 A
*( h7 O* F$ p' ^9 B7 K
* brief EDMA3 Test Application! W! n! B! t9 L8 q6 _9 C
*8 x) S0 H" ^) s. ]- w& x8 j! F
* This file contains EDMA3 Test code.) g) g, o; f% t: w. P0 U
*/ T1 y. a2 r" s# x2 \6 P3 n
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE$ D7 O) \, o+ ~1 c* ?
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT" l0 m1 Q+ K. b _
* TO CHANGE.8 Y7 e* P; i' f( Q9 @3 n
** n) H: l, {1 C/ H" ~* i
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/. a+ M' {& I) H u( F/ b
*
8 C/ V. z: O) ?* M3 ^' a0 O0 p* ^, u
* This program is free software; you can redistribute it and/or
4 [5 g9 v& v) q& Z/ N1 ]
* modify it under the terms of the GNU General Public License as
! q5 G; C/ H% [+ R/ ]
* published by the Free Software Foundation version 2.
7 Q- O2 `; R1 K1 j$ i( M8 ?, y
*
. o7 P( {' d7 e3 p$ H3 x
* This program is distributed "as is" WITHOUT ANY WARRANTY of any2 f$ Y3 f7 T7 C, d0 O, p- \* E( [5 l5 n
* kind, whether express or implied; without even the implied warranty
+ ?. }2 h: Z2 z
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
, F, K6 H; [& f& l& E' X
* GNU General Public License for more details.
5 h9 \. {- H; |& M" g
*/6 [0 L8 Y w. ?' u2 e" I
2 x) d; I) `4 m. [& [1 [- s0 v
#include <linux/module.h>
/ B5 M0 ]; h) n3 L/ H* Z
#include <linux/init.h>
+ B6 x+ N, k1 F6 t9 Y
#include <linux/errno.h>* b$ {6 K# e2 @( w+ G
#include <linux/types.h>& C7 W8 ]- D8 o l* N- y
#include <linux/interrupt.h>3 H/ \/ C% b! E
#include <asm/io.h>9 u8 p9 j0 B5 x
#include <linux/moduleparam.h>
+ @( b" b; r5 j
#include <linux/sysctl.h>( \! s! m& u- |1 [' ?. n
#include <linux/mm.h>
4 ?, y- Q& T- t2 e
#include <linux/dma-mapping.h> j# y: B' P! j8 n- v0 n
& n2 m4 k1 f* V
#include <mach/memory.h>
7 v6 d; w6 a9 M- {7 y) {9 m7 h
#include <mach/hardware.h>
1 T" l( a' T' ~$ J- o- `) K
#include <mach/irqs.h>
% i I- n' a2 `( h
#include <asm/hardware/edma.h>7 D8 A& a& U, o2 M' X% T' B- Y) U% i
1 H- s& n: B+ r# e& i* G# T/ q
#undef EDMA3_DEBUG
: ^: L. n( U% |0 x
/*#define EDMA3_DEBUG*/% E3 ?6 q: u$ c7 S! x2 i
) @) f% u: B$ v) D' J* l4 o
#ifdef EDMA3_DEBUG0 q1 n' D5 `( \6 ~$ P
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)7 n9 W, [1 I9 `
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)& ^$ l3 o5 r$ ~0 C1 X0 S4 a
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)* W$ d# @# D( F3 Y
#else
" u8 J9 B: I9 J" X* z
#define DMA_PRINTK( x... )
Z1 I8 }- @9 z+ ?& r) i4 ]
#define DMA_FN_IN* x9 C$ h0 |0 }( l% |5 e
#define DMA_FN_OUT
( g8 X7 z# @/ z; w7 l# r
#endif' k; N3 `. {- ?* ]! a9 p' l
w* N) ]% }$ |, B/ Y
#define MAX_DMA_TRANSFER_IN_BYTES (32768)- D+ `# Z0 F1 w' N7 d8 `& u
#define STATIC_SHIFT 31 Q$ M; t' Q4 h
#define TCINTEN_SHIFT 20
) z- t3 j3 x$ y: d0 J
#define ITCINTEN_SHIFT 21
: Z j. L! h3 G
#define TCCHEN_SHIFT 220 |2 O/ H* o' T& `3 p$ v8 Q
#define ITCCHEN_SHIFT 23
. A$ _6 }) n& D
- o, ?( v! W0 X/ V/ j
static volatile int irqraised1 = 0;% O6 {( N7 x% }
static volatile int irqraised2 = 0;8 u, ~! V/ }# D+ s4 E! ~
, r; p7 U' s2 g: O
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
0 }8 [# z0 ]- B3 ?1 J+ e. \
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* f& [: V8 Z3 b. L
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
# [' ?+ F, W2 |, l& ]1 f s) a* r
) S% @0 \! T% K" T' @( z
dma_addr_t dmaphyssrc1 = 0;
: _4 o/ R2 b" M: [
dma_addr_t dmaphyssrc2 = 0;$ K) x4 K- B4 c, }: O! I
dma_addr_t dmaphysdest1 = 0;5 V& v- F* i; J
dma_addr_t dmaphysdest2 = 0;
# F+ k: h0 [% S* T& m7 G$ F
5 T6 q1 t" @! c6 Q
char *dmabufsrc1 = NULL;6 U' _3 j, }, N" N" j; `6 ]
char *dmabufsrc2 = NULL;
1 J8 ?) P8 ^9 N
char *dmabufdest1 = NULL;
' ~* e$ e' f' m& g5 H" \! C! ~8 a
char *dmabufdest2 = NULL;7 T. x; U9 u2 \* W- @7 y; d" U
* K; _7 ], }+ |1 P9 T
static int acnt = 512;; }4 C/ w. h2 F, V
static int bcnt = 8;; U' R# K# N c J% g8 J$ U/ s
static int ccnt = 8;6 S7 i4 C h1 I' h- B
0 u/ z" X" o8 H, a* [: [
module_param(acnt, int, S_IRUGO);
& Z5 M% ?7 b% ~& |+ h* y: P" \
module_param(bcnt, int, S_IRUGO);- U; t6 B7 {% X$ O$ L; n- R
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

		自动登录	找回密码
密码			立即注册

[未解决] OMAPL138如何在Linux下使用EDMA3驱动